[dpdk-dev] [PATCH 0/4] check if any kernel driver is manipulating the virtio device
Peter Xu
peterx at redhat.com
Mon Dec 28 04:08:57 CET 2015
On Fri, Dec 25, 2015 at 02:38:08AM +0800, Huawei Xie wrote:
> virtio PMD doesn't set RTE_PCI_DRV_NEED_MAPPING in drv_flags of its
> eth_driver. It will try igb_uio and PORT IO in turn to configure
> virtio device. Even user in guest VM doesn't want to use virtio for
> DPDK, virtio PMD will take over the device blindly.
>
> The more serious problem is kernel driver is still manipulating the
> device, which causes driver conflict.
>
> This patch checks if there is any kernel driver manipulating the
> virtio device before virtio PMD uses port IO to configure the device.
>
> Huawei Xie (4):
> eal: make the comment more accurate
> eal: set kdrv to RTE_KDRV_NONE if kernel driver isn't manipulating the device.
> virtio: return 1 to tell the kernel we don't take over this device
> virtio: check if any kernel driver is manipulating the virtio device
Thanks for the patch. Looks good to me.
Peter
>
> drivers/net/virtio/virtio_ethdev.c | 15 +++++++++++++--
> lib/librte_eal/common/eal_common_pci.c | 8 ++++----
> lib/librte_eal/linuxapp/eal/eal_pci.c | 2 +-
> 3 files changed, 18 insertions(+), 7 deletions(-)
>
> --
> 1.8.1.4
>
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